# Bionic Reader

> Speed up your reading on any website or PDF. Bionic Reader bolds the first part of each word to guide your eyes, with adjustable strength and a one-key toggle. All processing is local.

Canonical page: [https://chrome-stats.com/d/bionic-reader-web-pdf](https://chrome-stats.com/d/bionic-reader-web-pdf)

## Overview

- **ID:** `bionic-reader-web-pdf`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** J.M.
- **Category:** appearance
- **Daily users:** 8
- **Weekly downloads:** 2
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 1.0.1
- **Last updated:** 2026-06-24
- **First published:** 2026-06-07
- **Size:** 648 KB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/bionic-reader-web-pdf/)
- **Website:** [https://github.com/Jamil-M03/Bionic-Reader/issues](https://github.com/Jamil-M03/Bionic-Reader/issues)

## Description

Bionic Reader highlights the leading letters of each word so your eyes can
move faster while your brain fills in the rest.
<ul><li>Toggle it on any website from the toolbar or with Ctrl+Alt+B</li><li>Three fixation strengths (Low / Medium / High)</li><li>A built-in PDF reader: open a PDF and read it with bionic emphasis while
  keeping the page's original layout — or turn bionic off for the exact page</li><li>Unicode-aware; keeps contractions intact and leaves numbers unbolded</li><li>100% local — your pages and files are never sent anywhere</li></ul>

## Rankings

- #36,440 — Overall
- #152 — reader

## Permissions and access

### Permissions

- `storage`
- `<all_urls>`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/bionic-reader-web-pdf)